初一数学题(解方程和计算) 【紧急】(1)解方程:150x/(1-60%)=150(x+20)/(1-15%)(2)计算:48+20-[12000*(1-20%)/150]【注意:解方程和计算需要写过程】
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![初一数学题(解方程和计算) 【紧急】(1)解方程:150x/(1-60%)=150(x+20)/(1-15%)(2)计算:48+20-[12000*(1-20%)/150]【注意:解方程和计算需要写过程】](/uploads/image/z/761247-63-7.jpg?t=%E5%88%9D%E4%B8%80%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E8%A7%A3%E6%96%B9%E7%A8%8B%E5%92%8C%E8%AE%A1%E7%AE%97%EF%BC%89+%E3%80%90%E7%B4%A7%E6%80%A5%E3%80%91%EF%BC%881%EF%BC%89%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9A150x%2F%281-60%25%29%3D150%28x%2B20%29%2F%281-15%25%29%EF%BC%882%EF%BC%89%E8%AE%A1%E7%AE%97%EF%BC%9A48%2B20-%5B12000%2A%281-20%25%29%2F150%5D%E3%80%90%E6%B3%A8%E6%84%8F%EF%BC%9A%E8%A7%A3%E6%96%B9%E7%A8%8B%E5%92%8C%E8%AE%A1%E7%AE%97%E9%9C%80%E8%A6%81%E5%86%99%E8%BF%87%E7%A8%8B%E3%80%91)
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初一数学题(解方程和计算) 【紧急】(1)解方程:150x/(1-60%)=150(x+20)/(1-15%)(2)计算:48+20-[12000*(1-20%)/150]【注意:解方程和计算需要写过程】
初一数学题(解方程和计算) 【紧急】
(1)解方程:
150x/(1-60%)=150(x+20)/(1-15%)
(2)计算:
48+20-[12000*(1-20%)/150]
【注意:解方程和计算需要写过程】
初一数学题(解方程和计算) 【紧急】(1)解方程:150x/(1-60%)=150(x+20)/(1-15%)(2)计算:48+20-[12000*(1-20%)/150]【注意:解方程和计算需要写过程】
(1)解方程:150x/(1-60%)=150(x+20)/(1-15%)
150x/0.4=150(x+20)/0.85
x/40=(x+20)/85
85x=40(x+20)
85x=40x+800
35x=800
x=800/35
x=160/7
(2)计算:48+20-[12000*(1-20%)/150]
=68-[12000*0.2/150]
=68-80*0.2
=68-16
=52